Home
Class 12
CHEMISTRY
No chemical compound of helium is known....

No chemical compound of helium is known.

Text Solution

Verified by Experts

The correct Answer is:
Firstly, He does not contain d-orbitals in the valence shell and hence electrons cannot be promoted to higher energy levels like that in Xe to form bonds.Therefore, helium does not form chemical compounds.Secondly, ionization enthalpy of He is sufficiently higher than those of `F_(2) and O_(2)`
Promotional Banner

Topper's Solved these Questions

  • P BLOCK ELEMENTS

    RESONANCE|Exercise SINGLE CHOICE TYPE|44 Videos

  • P BLOCK ELEMENTS

    RESONANCE|Exercise PART -II|24 Videos

  • P BLOCK ELEMENTS

    RESONANCE|Exercise Exercise 3 part-2|11 Videos

  • NUCLEAR CHEMISTRY

    RESONANCE|Exercise STAGE-II|1 Videos

  • P-BLOCK ELEMENT (BORON AND CARBON FAMILY)

    RESONANCE|Exercise PART - III : OLYMPIAD PROBLEMS (PREVIOUS YEARS) STAGE - V (INTERNATIONAL CHEMISTRY OLYMPIAD (IChO)) Problem 3|8 Videos

Similar Questions

Explore conceptually related problems

(a)What prompted Brithent in the disonvery of noble gas compounds? (b) The majurity of noble gas compound are these of xenon .Give reason (c ) No chemical compound of He in known why?

The chemical symbol for helium is

The only known true chemical compounds of noble gas are with

The chemical formula of a compound does not represent

The chemical equations are balanced to satisfy one of the following laws in chemical reactions. This law is known as :

The position of both , an electron and a helium atom is known within 1.0 nm. Further the momentum of the electron is known within 5.0xx10^(-26) kgms^(-1) The minimum uncertainty in the measurement of the momentum of the helium atom is

The position of both an electron and a helium atom is known within 1.0 nm and the momentum of the electron is known within 50 xx 10^-26 kg ms^-1 . The minimum uncertainty in the measurement of the momentum of the helium atom is.

RESONANCE-P BLOCK ELEMENTS-Exercise 3 part-3
  1. What happen when Cl(2) is passed through a hot concentrated solution o...

    Text Solution

    |

  2. How would you account for the following ? (i)The lower oxidation sta...

    Text Solution

    |

  3. Write chemical equations for the following processes : (i)Chlorine r...

    Text Solution

    |

  4. The negative value of electron gain enthalpy is less for fluorine than...

    Text Solution

    |

  5. Draw the structural formulae of molecules of following compounds : (...

    Text Solution

    |

  6. F(2) is a stronger oxidising agent than Cl(2)

    Text Solution

    |

  7. The majority of noble gas compounds are those of xenon. Explain.

    Text Solution

    |

  8. No chemical compound of helium is known.

    Text Solution

    |

  9. XeF(2) has linear structure and not a bent structure , Given reason .

    Text Solution

    |

  10. Why fluorine never acts as the central atom in polyatomic interhalogen...

    Text Solution

    |

  11. (a) (i) Complete the following chemical equations : (i)NaOH((aq))+...

    Text Solution

    |

  12. Why fluorine does not exhibit any positive oxidation state?

    Text Solution

    |

  13. Explain the following : (a) The electron gain enthalpy with negative...

    Text Solution

    |

  14. Draw the structure of XeF(2) molecule.

    Text Solution

    |

  15. (a)Account for the following : (i)The acidic strength decreases in t...

    Text Solution

    |

  16. (a) what happens when (i) Chlorine gas is passed though a hot conc...

    Text Solution

    |

  17. Explain the following giving an appropriate reason in each case. (i)...

    Text Solution

    |

  18. (a) Complete the following chemical equations : (i) NaOH + Cl(2) rar...

    Text Solution

    |

  19. (a)Draw the molecule structure of the following compounds : (i)N(2)O...

    Text Solution

    |

  20. (a) Account for the following : (i) Helium is used in diving apparat...

    Text Solution

    |